Do I have to respond immediately when Avast finds a problem and pops a window? It certainly looks like I cannot even put that window into the background and continue what I was doing.
Will the scanning/realtime protection stop if I just ignore the popup?
Schedule a boot time scanning with avast with archive scanning turned on. If avast does not detect it, you can try DrWeb CureIT! instead.
Use SUPERantispyware, MBAM or Spyware Terminator to scan for spywares and trojans. If any infection is detected, better and safer is send the file to Quarantine than to simple delete them.
It’s easy to miss, but on the line below tick “Don’t show this dialog next time”, and press “Continue”. Avast will continue the scan to the end and leave a report in the log. I put an eicar virus test file in the root directory of my C: drive. That way I get the popup within a few seconds of starting the scan, and can press Continue right away.
Sorry, I assumed you were talking about a manual scan. I’m using avast! version 4.8 Home Edition. It sounds like you’re getting your popup from something different such as the boot time scan or Quick Scanner. Is that right?
Oh, I think I understand now. That popup is from the the On-Access Scanner, possibly the Standard Shield, as you guessed. I verified the Standard Shield keeps scanning even though you haven’t dismissed the Warning dialog yet by selecting an action or clicking “No action”. You can verify it yourself too. While the warning dialog is waiting to be dismissed, Click on On-Access Protection Control from the system tray icon menu, select Standard Shield, and open a file, such as a text file. You can see that the “Scanned count” reported by the Standard Shield increments even though you haven’t dismissed the warning dialog. Have I got it yet?
Click here to see the differences between avast Home & Professional versions. Scheduling, automated actions, iPush updates, Script Blocker are some others.
Precisely, the on-access protection does not have that option due to security reasons (the user will disable the virus warnings this way). Even in the Pro version, it’s not a good idea to automate the Standard Shield actions… (silent mode).